Kentucky will not blend its corporate income tax rates, because the Kentucky statute
was amended to state the rate change applies to, “taxable years beginning on or
after January 1, 2018.” Although the new federal law contains similar language
to the Kentucky statute, a separate section of the Internal Revenue Code (IRC
§15 ) requires blending for fiscal year-end taxpayers when tax rates change. The IRS followed that section when it issued guidance in Notice 2018-38.